Pipe-wrench.



No. 788,156 PATENTED APR. 25, 1905. J. W. KING.

PIPE WRENCH.

APPLICATION FILED OUT. 25, 1904.

77 EB /Z9 Eli/mentor witwzoom N0. 788.1 56. Patented April 25, 1905.

UNITEn STATES ATENT JACOB \V. KING, OF (-iALESBURG, ILLINOIS, ASSIGNOR, BY IHREGT AND MICSNE ASSIGNMENTS, TO ALBERT J. PERRY, 'IRUS'IICE, OF GALESBURG, ILLINOIS.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 788,156, dated April. 25, 1905.

Application filed October 25, 1904. Serial No. 229,944.

171 {ll/l W711)! it 7/ (O/b61776! i loop lit in the rabbets I4. The loop proper 50 Be it known that I, JACOB IV. KING, a eitiis indicated by 17 and surrounds the stem 1, zenofthe United StatesresidingatGalesburg, it being capable of slipping along the latter in the county of Knox and State of Illinois, 1 longitudinally and also of being moved with have inventedcertain new and useful Improvethe jaw-block toward and from the stem.

ments in Pipe-'renches, of which the follow- The body part is secured in position in the 55 mglsaspeciticatlon,referencebeing-had therestrap-loop by means of a screw or screws, as in to the accompanying drawings. shown at 20. Parts I4 and I5 are normally Figure I is a view. partly in longitudinal held in their outermost positions by means of section and partly in elevation, of a wrench a spring .21, interposed between the part 14;

embodying my improvements. Fig. is a 1 and thestem. Thespring is preferably placed 60 side elevation of the jaws and parts adjacent in a socket 123, formed in the part 1& and arthereto. Fig. is a cr sssection of the shank, ranged to bear against a sliding pin 22, which taken on the line .11 .r, Fig. 2, showing the in turn bears against the stem or shank I of 5 movable jaw in plan. Fig. T a side view of j the tool. The jaw and the parts attached the movable jaw detached. Fig. 5 is a side thereto can be rocked around the hinge at I6 5 view of the carrier in which the movable jaw whenever it is desired to obtain access to the is hinged. Fig. 6 is a vertical section on the parts covered by it.

line 1 of Fig. 2. The strap-loop has its lower edges turned In the drawings the shank or stem of the in to form guide -'tongucs 25, which lit the tool is indicated by I, it having a head at 2 grooves 6 in the head 6. 7o capable of serving as a hammer and provided The sliding jaw-block I-L rests upon a series with a lateral extension at, serving as the lixcd ofantitriction-rollers2 1, which are interposed jaw of the wrench, this part having the grip- 3 between the block II and the head 6. They 5 ping-teeth at are prevented from escaping in one direction I) is the handle part, which may. be of any by the rib llot' the block I4 and in the other preferred character. direction by a holder on the part 6, preter- The sliding aw is carried by an adjustable ably a plate 26, secured by the screw 27. head (5, wlnch pro ects outward with a taper, If at any time it is desired to obtain access 3 as shown at 7, it having two guiding and bracto the covered surfaces or to the rollers, it is ing loops 8 and 9, which surround the stem. merely mwessary to loosen the screw at 20, It is socketed at It), the wall of the socket when the whole block can be turned outward being threaded and titted to a threaded adjuston the hinge at 16. ingbolt II, having the thumb-head 12, by The shank part I of the tool is not uniform 35 which it can be rotated in the usual way, the in cross-section from end to end; but at lines end of the bolt abutting against a projecting near its outer end it widens or is made grad- 5 shoulder at I3. The bearingsurface of this I ually thicker on the side opposite to the slidhead 6 is inclined downward and outward reling jaw let, as is shown at 28. The loop part atively to the stem and to the line of the teeth 17 ot' the sliding strap 15 I7 is adapted to slide 4 5 on the stationary head. Grooves are cut at along the edge or face of this tapered part 28 6 6 in the part 6, these providing a guidej and to be held thereby in ditlerent positions 9 way for the carrier of the movable jaw. The l in relation to the stem. For example, if by body part or block of the movable jaw-piece means of the screw 11 12 the head 6 is adis indicated by 1%. At the side it is recessed, justcd so as to have the jaw Ia comparatively 45 as shown at IT, and at the bottom it is cut close to the stationary jaw & the loop 17 will away,asshownat I-L",leavingtheriborprojecbe gradually moved backward in relation to tion I-i. This jaw is mounted in asheet-metal the shank and the slidingjaw will be held cori strap-loop I5 17, it being secured thereto by I respondingly nearer to the shank on the opa hinge at 16. The side parts of the strapi posite side. Consequently the jaw 1-]: will reciprocate over a shorter path. Hence when the tool is being used for turning relatively small bodies the sliding jaw is automatically adjusted or set to such position that it will move back and forth distances proportional to the size of the objects which it engages.

The manner of using a tool having my improvements will be readily understood. If, for example, a pipe or like object is to be rotated, the head 6 is first adjusted to proper distance from the head 4. The parts are then put into position for gripping the pipe, and if the wrench be rotated by the handle 3 a powerful and increasing bite is caused, the block 14, with its teeth 19, tending to move toward the stem 1 under the pressure that is being applied. As soon as the turning stress ceases the spring 21 forces the block outward to its normal position.

When a pipe, bolt, nut, or other object of relatively large diameter is to be operated on, the head 6 and the sliding jaw 14 are by the screw 11 set at a proportionately long distance from the jaw 4 and at each swinging movement of the tool the travel of the jaw 14 will be long in proportion to the size of the object; but, vice versa, when a pipe or other body of short diameter is to be engaged the head 6 and jaw 14 are adjusted to points near the jaw 4, and during such adjustment the tapered part 28 of the stem will gradually move the straploop 15 17 and the jaw 14 inward toward the shank and hold the jaw 14 against prolonged reciprocations, and they will be short and rapid in proportion to the said diameter of the engaged body.

I am aware of the fact that variousformshave heretofore been proposed of wrenches of this class, each having afixed jaw and an adjustable head moving along the stem of the fixed jaw, together with a spring-held jaw-plate. Iam also aware of the fact that antifriction-rollers have been proposed foruse in pipe-wrenches. These rollers are subjected to great strain and pressure, and access is frequently necessary to the interior parts in order to maintain them in working order, and I believe myself to be the first to have devised a construction and arrangement of parts which permits the operator to quickly and readily attain the ends desired with a tool of this sort, and I believe myself also to be the first to provide a tool of this class having a jaw which is movable back and forth during each swinging reciprocation of the tool and which has its parts so constructed that the travel of the jaw will be regulated and stopped, so as to be proportional to the diameter of the object being gripped.

hat I claim is 1. In a pipe-wrench, the combination with the stem 1 having a fixed head 2 with the teeth 5, of the adjustable head 6, the strap-loop surrounding the stem 1 and slidably mounted on the head 6, the jaw-block 14 hinged at 16 in the strap-loop, the antifriction-rollers between the jaw-block and the head, means for fastening the jaw-block 14 against rotation on the hinge, and the spring interposed between the stem 1 and the jaw-block, substantially as set forth.

2. In a wrench, the combination of the stem 1 with the fixed head 2 having the teeth 5, the sliding head 6, the bolt 11 for adjusting the head along the stem 1, the antifrictionrollers bearing upon the sliding head 6, the strap-loop 15 17 surrounding the stem 1, and fitted in aguideway in the head 6, the jawblock 14 hinged in the strap-loop and adapted to be turned to permit access to the inner surfaces and parts, and the spring interposed between the jaw-block and the stem 1, substantially as set forth.

3. In a pipe-wrench, the combination of the stem 1, having the head 2 with the teeth 5, of the adjustable head 6 formed with a clownwardly and outwardly inclined bearing and guiding surface, the antifriction-rollers resting upon said surface, the jaw-block 14 resting upon the said rollers and arranged to travel on inclined lines to and from the stem, the sliding strap-loop having the part 17 surrounding the stem and the downwardly-inclined parts slidably mounted on the head 6 and carrying the jaw-block 14 having a series of teeth 19 parallel to the inclined bearingsurface on the head 6 and to the series of rollers, substantially as set forth.

4. In a pipe-wrench, the combination with the shank, the fixed jaw, the sliding jaw, and the means for varying the distance between the fixed jaw and the sliding jaw, of means for automatically varying the travel of the sliding jaw toward and from the shank.

5. In a wrench, the combination of the shank, the relatively fixed jaw, the head adjustable along the shank, the sliding jaw on the head, manually-operated devices for adjusting the head, and automatically-actuated devices for adjusting the travel of thesliding jaw on the head while the head is being adjusted by the manually-operated adjusting devices, substantially as set forth.

6. In a wrench, the combination with the fixed jaw, the shank connected thereto, and a tapered portion as at 28, a head 6 sliding along the shank, a sliding jaw 14, a holding and stopping device for the sliding jaw, adapted to engage with the tapered part of the shank and to hold the sliding jaw in difierent positions relatively to the shank, substantially as Set forth.

In testimony whereof Iafltix my signature in presence of two witnesses.

JACOB W. KING Witnesses:

ALBERT J. PERRY, NELLIE STARK. 

